// pages/cart/cart.js

import {
  getSetting,
  chooseAddress,
  openSetting,
  showModal,
  showToast,
} from "../../utils/asyncWx";
Page({
  /**
   * 页面的初始数据
   */
  data: {
    address: {},
    cart: [],
    allChecked: false,
    totalPrice: 0,
    totalNum: 0,
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {},

  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady: function () {},

  /**
   * 生命周期函数--监听页面显示
   */
  onShow: function () {
    const address = wx.getStorageSync("address");
    const cart = wx.getStorageSync("cart") || [];
    this.setData({
      address,
    });
    this.setCart(cart);
  },
  async handleChooseAddress() {
    try {
      const res1 = await getSetting();

      const scopeAddress = res1.authSetting["scope.address"];
      if (scopeAddress === false) {
        await openSetting();
      }

      let address = await chooseAddress();
      console.log(address);
      address.all =
        address.provinceName +
        address.cityName +
        address.countyName +
        address.detailInfo;

      wx.setStorageSync("address", address);
    } catch (error) {
      console.log("计算机");
    }
  },
  handeItemChange(e) {
    const goods_id = e.currentTarget.dataset.id;
    let { cart } = this.data;
    let index = cart.findIndex((v) => v.goods_id === goods_id);
    cart[index].checked = !cart[index].checked;
    this.setCart(cart);
  },
  setCart(cart) {
    let allChecked = true;

    let totalPrice = 0;
    let totalNum = 0;
    cart.forEach((v) => {
      if (v.checked) {
        totalPrice += v.num * v.goods_price;
        totalNum += v.num;
      } else {
        allChecked = false;
      }
    });

    allChecked = cart.length != 0 ? allChecked : false;

    this.setData({
      cart,
      totalPrice,
      totalNum,
      allChecked,
    });
    wx.setStorageSync("cart", cart);
  },

  handleItemAllCheck() {
    let { cart, allChecked } = this.data;
    allChecked = !allChecked;
    cart.forEach((v) => (v.checked = allChecked));

    this.setCart(cart);
  },
  async handleItemNumEdit(e) {
    let { operation, id } = e.currentTarget.dataset;
    let { cart } = this.data;
    const index = cart.findIndex((v) => v.goods_id === id);
    if (cart[index].num === 1 && operation === -1) {
      const res = await showModal({
        content: "您是否需要删除",
      });
      if (res.confirm) {
        cart.splice(index, 1);
        this.setCart(cart);
      }
    } else {
      cart[index].num += operation;
      this.setCart(cart);
    }
  },

  async handlePay() {
    const { address, totalNum } = this.data;
    if (!address.userName) {
      await showToast({
        title: "您还没有选择收货地址",
      });
      return;
    }
    if (totalNum === 0) {
      await showToast({
        title: "您还没有选择商品",
      });
      return;
    }
    wx.navigateTo({
      url: "/pages/pay/pay",
    });
  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide: function () {},

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload: function () {},

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh: function () {},

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom: function () {},

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage: function () {},
});
